Prohibitory order under section 144 Cr.Pc was clamped in three fishermen villages here in connection with the clash between two groups of fishermen and the subsequent police firing in the air to quell the mob, officials said her on Sunday. It may be noted that the fishermen of Veerampatinam and Nallavadu clashed in the sea over the issue of use of Purse Seine net in which two fishermen from Nallavadu were injured. Following this the fishermen of Nallavadu and Veerampatinam villages gathered in strength and were ready to fight when the police fired in the air to disperse them. Heavy police pickerts have posted in the villages since, as it remained tense. However, the fishermen again reached the verge of a clash last night and police again fired in the air to disperse them. As the villages remained tense, prohibitory order under section 144 Cr.Pc was clamped in Veerampatinam, Nallavadu and Vambakeerappalayam villages. This came into force from midnight on Saturday night and will remain till further orders.